from animal_demo import Animal

# class Cat(Animal):
class Cat():
    cat_ethnic = '猫的种类'

    def cat_speak(self):
        print("猫叫：喵喵喵")

    def introduce(self):
        print("我是一只猫")

    # def fun(self,name,speak,habit):
    #     print("我是一只猫，我叫{},我这样叫：{}，我喜欢吃{}".format(name,speak,habit))